Sheet-metal roofing.



E. W. EDWARDS.

SHEET METAL ROOFING. AFPucATIoN FILED sPT.25. 1914.

AI W M d e t n e ATL nu D1 j t ic.

EDWARD WM. EDWARDS, F CINCINNATI, QHIO.

SHEET-METAL Romaine.

mamme.

To all whom it may concern.'

Be it known that I, EDWARD W. EDWARDS,

' a citizen of `the United States of America,

' simply slipping the beaded and a resident of Cincinnati,l county of Hamilton, State of Ohio, have invented certain new and useful Improvements 1n Sheet-Metal Roofing, of which the following is a full and clear specication, reference being had to the accompanying drawings, in

which- A Figure 1 is a perspective view showing a series of the sheets interlocked; and Fig. 2

is a transverse sectional view enlarged of the interlocking edges of two adjacent sheets.

The object of this invention is to provide an interlocked joint between adjacent sheets which shall have a high degree of efficiency as a barrier against ingress ofwater to the roofing boards below the sheets and which at the same time shall be rigid enough to avoid being seriously indented by persons walking on the roof, as more vfully hereinafter set forth.

Referring to the drawings by reference numerals, 2 designates the main part of the sheet and 3 designates an upstanding rounded ridge formed along one extreme eoge of the sheet by bending up the metal in the form of a bead, this bead orridge being approximately semi-circular in cross section.

Near the other edge of the sheet, the metal is folded longitudinally upon itself and the folded parts are brought together and bent over toward the adjacent edge of the sheet, v

thereby forming a double-thickness, archlike ridge 4 extending the full length of the sheet. this ridge being approximately semicircular in cross section and having lts free rounded edge 4 terminating near the body of the sheet. That portion of the sheet beyond the edge 5 of the aforesaid ridge is employed as usual as a nailing Han-ge, and directly under the arch-like ridge 4 the metal of the sheet is bent upwardly to form a longitudinal ridge 6, whose upper edge is rounded to conform approximately to the concave lower surface of the ridge 4. In the enlarged view in Fig. 2, the manner in which the adjacent edges of adjacent sheets interlock is illustrated. It will be seen that the sheets are interlocked by Specication of Letters Patent.

age by capillary attraction,

edge 3 of one Patented May 4, 1915.

Application led September 25, 1914. Serial No. 863,516.

sheet into the semi-circular channel formed between the parts 4 and'6, lso that when the parts are thus interlocked a single composite ridge is formed throughout the length of the sheet, which is constituted of four thicknesses of metal, thereby providing 'an interlocking connection which will be Afirm enough to prevent being seriously indented bead 3 is different from the curvature-of the ,f

chamiel between the parts 4 and 6,/and that the free edge of the bead 3' bears u on the sloping inner side of the bead 6; this is advantageous in vthat it provides fora wedg ing joint between the member 3 and the two members 4 and 6, whereby a close joint is maintained between these members at all times. rlhis joint will tend to prevent leakthis tendency to leakage throughl capillary action being a very potent force in causing roofs' of this type to leak.- It is advantageous to have the upper or convex side of the bead 3 abut against the under side of the convex part 4, as by that abutment the free edge of the bead-3 is kept pressed against the sloping convex side of the bead 6, as shown, the bead 3 being slightly spread when it is inserted in the semi-circular channel.

Having thus described my invention, what` claim is:

A sheet metal roofing plate, embodying a nailing fiange along one edge and.an upstanding longitudinal ridge formed adjacent thereto and a double walled ridge formed b bending the metal upon itself and then ben ing the same `over said ridge leaving a space therebetween, said ridges lying 1n close relation throughout so that said space therev between will be relatively narrow, and a bead on the extreme opposite side edge of the plate formed by bending up the edge n testimony whereof I hereunto ax my thereof, the shage of salid bead bineing such as signatre in the presence of two witnesses.

tocauseitto tintespace tweente ridges of the adjacent plate and haveits EDWARD EDWARDS. 5 free depending edge wedge against the inner Witnesses:

sloping wall of said upstanding longitudi- OLNEB S. LABKB nal ridge. Davm C'. HALE,- r. 

